Littelfuse TDR4A12 is a versatile octal 8-pin plug-in time delay relay. It supports a wide range of output load ratings, including 10 A resistive @ 120/240 V ac and 30 V dc, and 1/3 hp @ 230 V ac. With a compact design and microcontroller time delay type, this relay offers precise repeat accuracy of ±0.1% or 20 ms. It has a fast reset time of ≤150 ms and a recycling time of ≤500 ms. With multiple LED indication lights, easy monitoring of input voltage and output relay energization is ensured. The TDR4A12 has a long electrical life of 1 x 10⁵ cycles and mechanical life of 1 x 10⁷ cycles, making it a reliable choice for various applications.